The week began with the Detroit Lions signing their first-round draft pick, offensive tackle Riley Reiff, leaving just two dozen unsigned picks from the 2012 NFL Draft as NFL teams began opening training camp. With a flurry of signings over the last 48 hours, here's a rundown of the 13 remaining unsigned players and their teams' training camp reporting dates:

Wednesday could be a busy day on the signings front as the Bengals, Colts, Jaguars, Chiefs, Dolphins and Vikings -- who combined have 10 of the 13 unsigned picks -- have rookies (and in most cases, veterans) reporting to training camp Wednesday or Thursday.

By round, five of the 13 unsigned picks were selected in the first round, one was selected in the second round. Six are third-round picks and one player was chosen in the fifth round.